How to export step file?
This really should be in a different exchange server but...
Yes, I watched your video...
Using the Part workbench, click &quot;Create shape from mesh&quot; then select the new object and export it.
Blender creates mesh objects, FreeCAD operates on &quot;solid&quot; objects. They use very different internal mathematics to calculate the shape. STEP format is a &quot;solid&quot; format so it cannot operate on a mesh. You should use Google to learn about the differences, it's very interesting...